<template>
  <el-container class="home-container">
    <!--   页面头部-->
    <el-header>
      <div>
        <a href="http://www.itheima.com/">
          <img src="../assets/微笑哆啦A梦.png" alt="">
        </a>
        <span class="name">Zixia Management System</span>
      </div>
      <el-button type="info" plain @click="layOut">退出</el-button>
    </el-header>
    <!--    主体部分-->
    <el-container>
      <!--      侧边栏部分-->
      <el-aside :width="isShow ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!--      侧边栏菜单  unique-opened 只保持一个子菜单-->
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF"
                 :unique-opened="true" :collapse="isShow" :collapse-transition="false"
                 :router="true" :default-active="activePath">
          <!--      一级菜单区域-->
          <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
            <!--     一级菜单模板-->
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <!--       文本区域-->
              <span>{{ item.authName }}</span>
            </template>
            <!--    二级菜单-->
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id"
                          @click="saveNavState('/'+subItem.path)">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <!--       文本区域-->
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!--      内容主题部分-->
      <el-main>
        <router-view/>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      menuList: [],   //菜单数组
      iconsObj: {
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      isShow: false,   //侧边栏显示隐藏
      activePath: ''   //被激活的链接
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    layOut() {
      //清除token
      window.sessionStorage.clear()
      //跳转
      this.$router.push('/login')
    },
    //获取商品列表
    async getMenuList() {
      const {data: res} = await this.$http.get('menus')
      if (res.meta.status !== 200) {
        this.$message.error(res.meta.msg)
      } else {
        this.menuList = res.data
      }
    },
    toggleCollapse() {
      this.isShow = !this.isShow
    },
    //保存链接激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}

.el-header {
  background-color: #373d41;
  display: flex;
  //将子元素放两边
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;

  > div {
    display: flex;
    align-items: center;

    span {
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;

  .el-menu {
    border-right: none;
  }

  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 10px;
}

.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}

img {
  width: 60px;
  height: 60px;
}

.name {
  color: deeppink;
}
</style>
